Cutting apparatus for mowing-machines



(No Model.) 2 Sheet's -sheet 1.

H. Moo-N. I CUTTING APPARATUS FOR MOWING MAGHINES. No. 5l5,603.-Patented Feb. 27, 1894.

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(No Model.) 2 Sheets-Sheet 2.

H. MOON. GUTTING APPARATUS FOR MOWING MACHINES.

No. 515,603. Patented Feb. 27, 1894.

UNITED STATES PATENT @riucn.

HERMON MOON, OF GROVE, ASSIG-NOR OF TlVO-THIRDS TO JOHN T. GRILL ANDJNO. l/V. BELL, OF MERCER, PENNSYLVANIA.

CUTTING APPARATUS FOR MOWlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 515,603, dated February27, 1894.

Applioationfiled June 19, 1893. Serial No. 478,156. (No model.)

To all whom it 111.6113; concern:

Be it known that I, HERMON MOON, a citizen of the United States,residing at Grove, in the county of Mercer and State of Pennsylvania,have invented certain new and useful Improvements in Cutting Apparatusfor Mowing-lvlachines, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in cuttingapparatus for mowing machines, and it has for its object to provide areversible knife for said cutting apparatus whereby when one set ofknives becomes dulled or injured, the knife bar may be reversed and anentirely new set of knives brought into use, all of which is hereinafterfully set forth.

The invention has other minor objects in view which are fully set forthin the course of this specification.

In the drawings:--Figure 1 is a plan view showing a portion of thecutter-bar with the knife in position thereon. Fig. 2 is a sectionalview on line 22 of Fig. l; and Fig. 3 is a perspective view of theknife-bar reciprocating guide-block. Fig. 4 is a plan view of amodification of my device. Fig. 5 is a sectional. view of thismodification; and Fig.

'6 is a detail of the modification.

Referring to the various parts by letters, a

on the upper side thereof near its forward edge o the guard-fingerscarried by the cutfer-bar in the usual manner; d the enlarged inner endof the cutter-bar; e a longitudinal slot formed in said enlargedportion, said slot being L-shaped in cross section; f a Z-shaped blockthe lower half of which fits said slot and is adapted to be reciprocatedtherein by the pitman g which is connected to the removable wrist-pin itcarried by the blookf, said block being formed at its upper and loweredges with the outwardly extending flanges f f.

i is the knife bar which is connected to the block f at its inner end,and extends along the forward edge of the cutter bar, and is guidedthereon by the guide b, at its rear, and by the depending portions j ofthe armsj, on its forward side.

70 7c are the knife blades which are of the usual construction and aresecured to the up per and lower sides of the knife bar, the knives onthe lower side of the bar c' extending transversely of the bar in onedirection and those secured on the upper side thereof extending in theopposite direction. The knives securedon each side of the bar 2' areplaced in such relation to each other that the joints between the kniveson one side of said bar will break-joints with those on the oppositeside thereof, that is, the center of the knives of one series will bedirectly opposite the ends of the knives of the other series. By thisarrangement of the knives the bar 1' is greatly strengthened andstiffened through out its length, and a much lighter bar may thereforebe employed.

Zis a guide plate which is secured to the upper side of the cutter-bar,its forward edge extending over the rearwardly projecting set of knivesk, thereby protecting said knives from any dirt, grass, &c., which wouldbe likely to interfere with their free movement. The armsj are securedon the upper side of this guard plate and extend forwardly over saidplate and the knife-bare as clearly shown in the drawings.

A spring controlled presser-har m is supported by the flat orieafsprings 91. under the rearwardly extending set of knives 70. This barbears against the under side of said knives and forces them against theunder side of the depending forward portion j of the guide armsj andthereby securely holds the entire knife bar steady, and secures it inaccurate operative position. This presser bar also by its upwardpressure on the rear set of knives, holds the forward operating set ofknives down to the guard fingers and thereby secures the shear out andproduces the best results from their operation. Another importantadvantage of this bar 11?. is that it will take up the Wear on theknives and always hold them steadily in place to the guard fingers,thereby materially lengthening the life of the knives. In order to ad-IOC the guides 7".

' knife bar in such relation that they are directly opposite each other,which in some instances may be found desirable, but I wish it understoodthat I prefer the construction shown in Figs. 1 and 2 as combining greatstrength with accurate working and lightness;

In operation the knife is reciprocated in the usual manner by its pitmanconnection, the guard plate Z protecting the set of knives which projectrearwardly and areout of use. When the set of knives are in use havebecome dulled or injured and it is desired to bring the unused set intooperation, the pitman is released from the blockfby means of theremovable wrist-pin, and the knife bar is removed from the cutter-bar,the block f being also removed from the slot e. The block fand theknife-bar are now reversed,and the blockfin its reversed position isagain inserted in the slot 6 and the knife bar is again supported on thecutter bar as before described. The wrist-pin and pitman are nowconnected to the block f, a series of perforations being form ed in saidblock to secure the proper adjustment of the wrist-pin, and the knifebar reciprocated as before. The block fbeing formed with the twooutwardly extending flanges f f is readily inserted in either of itspositions in the slot 6 of the cutter bar, as will be readilyunderstood. It will thus be seen that I provide an exceedingly simplecutting apparatus whereby the knife may be readily, and withoutdisconnecting any of the parts (except the wrist-pin) reversed, and anew set of knives brought into use.

Having thus fully described my invention, what I claim is 1. A cuttingapparatus for a mowing machine consisting of a cutter-bar, guard'fingerscarried thereby, a knife bar, knives secured on the upper and lowersides of said bar, each set of knives extending in opposite directions,a guard plate extending over the unused set of knives, means forreciprocating said knife bar, and means whereby said bar maybe reversedsubstantially as described.

2. A cutting apparatus for a mowing machine consisting of a cutter-bar,guard fingers carried thereby, a knife-bar, knives mounted on the upperand lower sides of said bar as described,a guard for the rearwardlyextending unused set of knives and guides carried by the cutter-bar andengaging the knife-bar at its front and rear sides, and means forreciprocating said bar, substantially as described.

3. A cutting apparatus for a mowing machine consisting of acutter-bar,guard fingers, a knife-bar carrying knives on its upper andlower sides as described, guides for said knifebar, a block secured tothe end of the knifebar, said block at its upper and lower ends beingenlarged, said enlarged ends being adapted to fit and reciprocate in aslot formed in the cutter-bar, a wrist-pin removably connected to saidblock, whereby the knife bar may be reversed, substantially asdescribed. -45. A cutting apparatus for a mowing machine consisting of acutter bar, guard fingers carried thereby, a knife bar, knives securedon the upper and lower sides of the bar as described, a presser-barcarried by the cutter-bar and bearing on the under side of the unusedset of knives, means for reciprocating the bar.

5. A cutting apparatus. for mowing 1nachines consisting of a cutter-bar,guard fingers, a knife bar, knives secured to the upper and lower sidesof said bar said knives extending in opposite directions as described, apresser-bar, m, bearing on the under side of the unused set of knives,springs supporting said presser-bar, means for adjusting the pressure ofsaid springs, means for reciproeating said bar, substantially asdescribed.

6. A mowing apparatus for a mowing machine, consisting of a cutter-bar,guard-fingers, a knife-bar, knives secured on the upper and lower sidesof said bar, said knives extending in opposite directions and beingsecured to the knife-bar in such manner that those on one side thereofwill breakjoints with those on the other side, means for reciprocatingsaid bar, substantially as described.

In testimony whereof Iaffix my signature in presence of two witnesses.

HERMON MOON.

Witnesses: LYLE W. ORR, J. Y. TEMPLETON.

